Fire wall cover question. - Page 2 - PeachParts Mercedes-Benz Forum

hippie_elmo · #16 02-21-2002, 01:31 PM

I was wrong, it is a 1972 250. Is there a big power differnece then the 280 and a 250? Is there a big differnce with 2 2bbl carbs. then a 4bbl carb? I had a 1974 280 and just wanted to know the differnce between these two cars.

Thanks for your help,

Mark DiSilvestro · #17 02-21-2002, 03:32 PM

I don't think there's alot of difference in power between the USA SOHC 250 and DOHC 280 carb engines. Most of the difference comes from state of engine tune and how well the automatic trans functions with the particular engine. I've notice also, some aftermarket exhaust systems can hamper performance on these cars.
My '72 250 (with a '70 2.8 engine) never felt as peppy as my Moms former '70 250 with the 2.5 engine. I had a friend with a '71 250C that was really quick - too bad it was such a rust bucket. Several years ago, I had to replace the cams and followers on my bosses '76 280. When I was finished, that car felt about as powerfull as my 250 except smoother.
My '72 250C seems peppier than my '72 sedan but I think the difference is in the automatic trans. If I could wave a magic wand over one of these cars I'd go for the factory 5 speed or at least a 4 speed.

Happy Motoring,
Mark

hippie_elmo · #18 02-21-2002, 03:37 PM

Thanks for the information. Do you know why MB put 2 2bbl. carbs on these instead of one 4bbl?

Mark DiSilvestro · #19 02-21-2002, 03:58 PM

MB started using twin 2V Solexes on the mid 50s 220S sixes. I think the theory was to keep the intake manifold path to the cylinders as short/uniform as possible.
Improvements in engine/manifold technology and emmisions reduction requirements (and probably cost cutting) made twin carbs less of an issue on regular MB US spec. passenger cars by the early '70s.
(But I thought you were getting a '77 240D)

Happy Motoring,
Mark

(There's almost no substitute for the smoothness of an inline six!)

hippie_elmo · #20 02-23-2002, 12:44 PM

I have the 1977 240D but the person that is saleing the 1972 250 offered me a deal that is allot cheaper then what they wanted when I saw it first so I'm buying the 250. Then I might sale the 240D on ebay or something. So the twin carbs. work just like a 4bbl? Only two are open tell there is enough pressure for the other two to open?

Mark DiSilvestro · #21 02-23-2002, 01:15 PM

The twin Zeniths each have a vacuum diaphragm to open the secondary throttles. Maybe you should hang on to the Diesel in case gas prices go through the roof again. I know Diesel is still high now but that 240D might get almost double the fuel mileage of that 250.

Happy Motoring,
Mark

Mark DiSilvestro · #22 02-23-2002, 01:22 PM

Is that 250 all original and what color is it?

Happy Motoring,
Mark

cth350 · #23 02-23-2002, 02:12 PM

The 250/8 with the M130 motor (the 2.8l) is a very solid, nice car. But at 6,000$, I'd rather have an equally solid, far nicer 111 coupe.

You can get a rust free, perhaps 30,000 mile car in NJ that's been sitting in a garage for the past 20 years 250S (108 body) car for under 2,000$ (at least I think it's still available).

-CTH

hippie_elmo · #24 02-24-2002, 02:37 AM

The person want down to $3,500.00 everything is original. There are no tears in the seat or cracks in the dashboard. It has 90,000 miles on it. The lady just put in $2,000.00 into a few weeks ago. The 240D is going to need alot of work to so instead of putting in the $3,000.00 into the 240D I'm going to buy the 250.

cth350 · #25 02-24-2002, 07:52 AM

I missed a few posts in this thread earlier... The 250/8 lost the 2.5l M114 engine in mid-1970 in favor of the newer, stronger, more stable 2.8l M130. With correctly set up carbs, the M130 is an absolutely great motor. In several ways, it beats the newer M110, as configured for the US market.

Silly question, but has the car gotten an inspection from a comptent, independent mechanic? Neither you nor I should do our own prepurchase inspections on a car that is destined for daily use or with such high expectations of quality.

Get it up on a lift and poke around with a screw driver. Get the suspension & brakes checked. Make sure the emmissions are to spec, even if California lets you get away w/o any specific numbers.

Aside from peace of mind, you know you are starting with known quantities.

-CTH

hippie_elmo · #26 02-24-2002, 12:21 PM

Sounds like it should be a good car for the money. The engine looks alot smaller then the M110 that was in my 1973 280.

The mechanic that was fixing my 280 told me about this car. He said that everything was great. He told me what he just did to it. I poke around it when I first checked it out and I didn't see anything. I like the 114 body better then the 123 that my 240D is.

cth350 · #27 02-24-2002, 12:46 PM

I much prefer the 114 myself. My very first benz was a '69 model 230/8, the first of the 114 chassis cars. Though I much prefer my 280C to my 250. So much so, that I paid 250$ for a mangled 280CE so I can transfer the CIS fuel injected engine into it. I would have preferred a Djet (more horses), but they're hard to find here in the states.

BTW, the lower half of the M110 engine is essentially identical to the M130. The difference is in the valve train and all the head/timing stuff to support it. The M110 was Benz's most long lived motor, going something like 19 years essentially unchanged. The carb & fuel injected cars used the same head after the first year or so. The only difference was how you bolted the fuel system in place.

-CTH

hippie_elmo · #28 02-25-2002, 07:27 PM

Thanks for all the information. I had question about the flex disc (I think this is what is called) which is on the rear axle and the front of the alex. Does the 250 have this? Should I have them replaced?

Mark DiSilvestro · #29 02-26-2002, 10:36 AM

The 250 has flex-discs on the front and rear ends of the driveshaft, with a U-joint at the center - should be the same on the 280.

Happy Motoring,
Mark

hippie_elmo · #30 02-26-2002, 10:41 AM

Should I replace these?

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